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प्रश्न
The energy of a flying kite is kinetic energy.
विकल्प
True
False
उत्तर
True .
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संबंधित प्रश्न
Two toy-cars A and Bof masses 200 g and 500 g respectively are moving with the same speed. Which of the two has greater kinetic energy?
The kinetic energy of a body is the energy by virtue of its ______.
A bullet of mass 50 g is moving with a velocity of 500 m s-1. It penetrated 10 cm into a still target and comes to rest. Calculate:
- the kinetic energy possessed by the bullet, and
- the average retarding force offered by the target.
A truck weighing 1000 kgf changes its speed from 36 km h-1 to 72 km h-1 in 2 minutes. Calculate:
- the work done by the engine and
- its power (g = 10 m s-2)
By how much will the kinetic energy of a body increase if its speed is doubled?
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
The energy possessed by a cricket ball bowled by a player is ______.
When stored water falls down, potential energy of water is converted into ______.
Water stored in water dams possesses kinetic energy.
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate:
- the work done by the engine.
- the power of the engine.
